8th Electric and Magnetic Forces

Front

What is the definition of electric current?

Back

A directional flow of electrical charge through an object or medium.

Front

What procedure should students follow to investigate how electric energy affects motor speed?

Back

Measure the rotations per second of a motor when it is connected to one battery, two batteries, and three batteries.

Front

What happens when the north ends of two magnets are placed near each other?

Back

They will repulse (repel) each other.

Front

How does the attraction between magnets change as the distance between them increases?

Back

The attraction will decrease.

Front

What conclusion can be drawn about the relationship between distance and electromagnetic force?

Back

The smaller the distance between two electromagnets, the greater the force.

Front

What is magnetic force?

Back

The attraction or repulsion that arises between electrically charged particles due to their motion.

Front

What is the principle of electromagnetism?

Back

The principle that electric currents produce magnetic fields and that changing magnetic fields can induce electric currents.

Front

What is the role of a battery in an electric circuit?

Back

A battery provides the electrical energy needed to drive the current through the circuit.

Front

What is the difference between series and parallel circuits?

Back

In a series circuit, components are connected end-to-end, while in a parallel circuit, components are connected across common points.

Front

What is the effect of increasing voltage on current in a circuit?

Back

Increasing voltage generally increases the current, assuming resistance remains constant (Ohm's Law).